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06-23-2010

OPTICAL COMPONENT AND MANUFACTURING METHOD OF THE OPTICAL COMPONENT

An optical component which includes: a plastic substrate; and an antireflection film disposed on the substrate, wherein the antireflection film is a multilayer film having alternately-laminated six or more layers including high refractive index layers and low refractive index layers; a first layer of the antireflection film deposited closest to the substrate is a high refractive index layer; » satisfies 480 nm‰¤»‰¤530 nm where » is the wavelength of light incident into the antireflection film; an optical thickness D 1 of the first layer satisfies 0.02»‰¤D1‰¤0.04»; an optical thickness Dm of a layer of the antireflection film that is located fifth from an outermost layer deposited furthest from the substrate satisfies 0.19»‰¤Dm‰¤0.75»; a total physical thickness dt of the entire antireflection film satisfies 350 nm‰¤dt‰¤480nm; and a total physical thickness da of the low refractive index layers satisfies 0.65 dt‰¤da‰¤0.80dt.

Document: EP2199835A1
Click here for the full patent text at DEPATISnet [PDF]
Published patent application
Disclosure date: 10-02-2007
Publication date: 06-23-2010
Applicant: NIKON ESSILOR CO LTD, JP
Inventor: TOMODA MASAOKI, JP


© European Patent Office. This information was obtained from the espacenet of the European Patent Office. There is no guarantee of its correctness or curency. For additional information, please use the research at espacenet. It is possible to determine the current legal and procedural status of patents and utility patents/models at http://worldwide.espacenet.com/ kfree of charge.

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